Bring style to your decor with the Capello Window Clock. Its unique window display lets you see the time floating on the transparent glass. Power up overnight with its fast-charging 2A USB power port for your smartphone, tablets or other USB devices. Turn on the LED nightlight to see the time in the dark and to, softly, light your nightstand. Window Clock, also, has dual alarms with snooze. This clock is, electrically, operated (the battery back-up does not power the clock). The battery back-up is used to store the time and alarm settings, if power is interrupted.